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William Optics RedCat or WhiteCat 51 APO f/4.9
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William Optics RedCat or WhiteCat 51 APO f/4.9William Optics RedCat or WhiteCat 51 APO f/4.9William Optics RedCat or WhiteCat 51 APO f/4.9
William Optics RedCat or WhiteCat 51 APO f/4.9William Optics RedCat or WhiteCat 51 APO f/4.9

William Optics RedCat or WhiteCat 51 APO f/4.9

£649.00✓ 2 year warranty
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Usually shipped 15-20 working days.

About this product

Model:  wo_redcat_51
Part Number:  A-CAT51-R

Now available - New RedCat 51 250mm f/4.9 Apo

The NEW William Optics RedCat 51 APO is a 51mm f/4.9 Petzval refractor that includes synthetic fluoride (FPL53 and FPL51) glass elements for a full frame, flat field image.

Provides high resolution images when used for astrophotography or wildlife photography.

It's fast f/4.9 focal ratio and compact size makes it ideal for convenient wide field astrophotography or piggybacking. 

Incorporates a smooth helical focuser, a field rotator graduated by degree, a slot for 48mm filters and a reversible dovetail for either Vixen style* or Arca-Swiss mounting. 

* Some customers have found William Optics' Vixen style dimension a little too narrow for their mount's saddle so you might need to fit a different dovetail. 

Telescope Field of View Simulator

What's in the box

  • RedCat 51 f/4.9 scope
  • Soft Carry Case
  • Patented Bahtinov Mask

Specifications

Aperture51mm
Focal RatioF/4.9
Focal Length250 mm
Objective TypePetzval (4 elements in 3 groups) and Ohara FPL 53 ED element. 
Image CircleRedCat Φ 44mm (Full Frame)
FocuserHelical
Dimensions225mm x 80mm x 80mm
Tube Weight1.47kg

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